Encode - all symbols in source code will be replaced with corresponding "escape" codes (light protection, output file size is slightly increased);
Encrypt - source code will be encrypted with well secured encryption algorithm (stronger protection, recommended).

Code Optimization

Light optimization - removing all useless parts from source code (spaces, tabs, new lines) to reduce file size and speed up loading (recommended).

Area of protection

Protect Tagged Areas - only text between system tags (<!--hpc_start-->,
<!--hpc_end-->) is protected;
Protect Body Section - entire BODY section of the page is protected. Note that your page may not be properly indexed by search engine spiders due to source code hiding;
Protect Entire Page - HEAD and BODY sections are protected. Note that search engine spiders will not be able to read meta tags in HEAD section;
Without Protection - source code is kept untouched.

Java Script

Insert script into page - Additional protection script is inserted into source code of the pages;
Use external .js file - Additional protection script is stored as external "protect.js" file. The string <script language="JavaScript" src="protect.js"></script> is inserted into head section of the page. Don't forget to upload "protect.js" file along with your pages.